Job-work valuation under Central Excise excludes principal-supplied materials unless legal inclusion is established.

In a pure job-work arrangement under Rule 57F(4) of the Central Excise Rules, duty on processed goods could not be expanded by adding the value of shafts supplied by the principal manufacturer unless a legal basis for such inclusion was shown. The Tribunal noted that the respondents carried out processing for return to the principal manufacturer and that duty had already been paid on the shells manufactured by them. On the facts found, the Commissioner (Appeals) was in holding that the shafts' value was not required to be added, so the Revenue's challenge failed.

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Issues: Whether, in job work undertaken under Rule 57F(4) of the Central Excise Rules, the value of shafts received from the principal manufacturer could be added while assessing duty on the job-worked goods.

Analysis: The respondents were carrying out job work and returning the processed goods to the principal manufacturer. Duty had been paid on the shells manufactured by them, and the dispute concerned whether the value of the shafts supplied by others could be included for duty purposes. The Tribunal accepted the Revenue's contention that the respondents were operating under Rule 57F(4) of the Central Excise Rules, but found no infirmity in the Commissioner (Appeals)' order, which had held that the value of the shafts was not required to be added in the facts of the case.

Conclusion: The addition of the value of the shafts was not warranted on the facts found, and the Revenue's appeal failed.

Ratio Decidendi: In a pure job-work arrangement under Rule 57F(4) of the Central Excise Rules, duty on the processed goods cannot be enlarged by adding the value of materials supplied by the principal manufacturer unless the legal basis for such inclusion is established.

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